You will not be sorry if you buy this book.A great read I spent $100 to buy this book and found it well worth it. Other MTG books age, this does not. Jamie Wakefield is very entertaining.
He'll give you some idea about what makes a tournament winning deck, of course, only your practice will ever perfect this. He opened my eyes to the fact that a majority of the decks are built around the key cards of each color. i.e. If you're playing black, you're probably facing Necro. What this means for you--even if you don't get to play frequently--is you can browse the internet to find out the trend decks or cards and be pretty certain you'll face them on the tournament scene. Right now, Masticore and Cursed Scroll seem to be biggies for several of the top decks.
In a sentence, you can learn a lot about what to expect at Pro Tours without ever leaving your home. This book was a fun read.